Current-motor.



A. K. ISHAM. CURRENT MOTOR.

' APPLICATION FILED JUNE 26. L908.

Patented Dec. 1, 1908.

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A. K. ISHAM.

GURRENT MOTOR.

APPLIOATION nun 1mm 26,1908.

905,320. Patented Dec. 1, 1908.

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AL ONZO K. ISHAM, OF SEATTLE, WASHINGTON.

CURRENT-MOTOR.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed. June 26, mos. Serial No. 440,591.

To all whom it may concern.

Be it known that I, ALONZO K. IsHAM, a citizen of the United States of America, and a resident of the city of Seattle, in the county of King and State of Washington, have invented certain newand usefullmprovements in Current-Motors, of which the following is'a specification.

My invention aims primarily to provide an improved apparatus of the above type which while being comparatively simple in construction will operate in aneflicient man:

ner.

Other objects will be set forth as the description progresses and those structural features and arrangement and combinations. of parts in which my inventionresides, succinctly defined in the'annexed claims. 3

Referring now to the accompanying drawings, in which like numeralsof reference v indicate, like H parts throughout the several views: Figure 1 is a view in top plan,.ofa

current motor f embodying my invention. Fig. 2 is ,an end View thereof. ,Fig. 3 is a section taken on line 3 3 of Fig. 2. .t is a planviewillustrating more particularly the pump mechanism and the means for releasing' the beam of my motor adjacent the end of its path of swing. Fig. 5 is a section taken on line 55 of Fig. 1,.and Fig. 6 is a section taken on line 6 6 of Fig. 5. 7 While my apparatus can be otherwise'em ployed, I have illustrated the same as connected for operating suitable pumpmech'anism comprising cylinders l in which operate suitable pistons (notshown), connected by a common rod 2, which is provided with a pair of spaced collars 3.

Reference numeral 4 indicates a suitable support, preferably of buoyant. construction, on which is pivotally supported for horizontal swinging, as at 5, a beam 6. .Journaled on the ends of beam 6 are hubs 7, each of which is provided with a pair of bladesS, the blades of each'pair being. fixed to said hubs at diametrically opposite points as clearly illustrated in Figs. 1 and 2. Secured to the inner side faces of hubs 7 are fins or projections 9, arranged at diametrically opposite points on respective hubs for engagement with movable stops 10, I pivoted for vertical swinging between lugs 11, fixed to the under-face of beam6 adjacent the end portions thereof, whereby the blades are re tained in vertical position for action of the water to swing beam 6, as will be more fully set forth in the following.

Referencenumeral 12 indicates abutments whichhave inclined'upper faces over which the inner end portions of stops 10 ride as the blades reach the end of their. active strokes, to effect releasing of said blades.

Carried by each hub 7 are fingers 13 for engagement with suitable abutments 14 arranged to be'engaged by said fingers, as the lowermost blades approach the end of their inactive stroke, to rotate the hubs 7 to move the upper blades so that the water can. engage the same. 7 v

In operation, beam 6 is swung back and forth by the action of the water on blades 8, the blades of each pair'being. alternately moved to be engaged by the water as will be readily understood in'.view of the following.

lEteferring'jnOW to Fig. 1, beam 6 has' been swung by the action of the water on the lower blade8 on the right, and said blade having heen released by its stop 10. striking the adjacent abutment 12, is feathered, by the action of the water (see Figs. 2 and 3), so as to ofier but little resistance during its return or inactive movementwhich is ef- "fec tedlby the action of the water on the lower bladejS on the left. {As the blades reachthe end of their active strokes one finger on the opposite hub 7 engageslits abutment 14 thereby effecting rotation of said hub to swing the upper blade so that its outer end portion engages. in the water, Thecurrent then acts to set the blades in vertical position.

Reference numeral 15 indicates a depending finger supported for sliding longitudinally of beam 6 in a guide 16, fixed-to the underface of said beam (see Fig. 5), which finger engages, first one collar 3 then the other, to effect reciprocation of rod 2 during swinging of beam .6. Finger 15 rides in a slot 20. (see Fig. 4) of a guide 20, fixed to the pump cylinders, which slot is offset at each end portion to guide finger 15 clear of collars 3 adjacent the points indicated by broken lines. in Fig. 4 at which the movement of beam v6 is reversed, thereby relieving the beam during operation ,ofthc blades for reverse movement of the mechanism.

prevent any accidental backward movement of the piston rod, after finger 15-has been moved from between the collars 3 thereof I provide suitable set devices 17, 17 arwill therefore be suflicient for a clear un-der- I standing of their construction and operation. This comprises a strike arm 18, pivoted at 18 to the support 4, which lies in the path of beam 6 and an arm 19 movable therewith and arranged to engage the foremost collar 3. Now when beam 6 strikes arm 18, it swings, the same, as indicated by broken lines in Fig. 6, causing arm 19 to engage said collar 3 and move the. piston rod slightly to insure of the collar lying clear of the adjacent offset end portion of slot 16. Af ter swinging strike arm 18 toasubstantially vertical position, beam 6 moves directly above the, same so that the broad fiat upper face of said strike arm will bear against its under side, thereby holding said strike arm from movement. WVhen beam 6 swings from over the set devices 17, 17, they swing by gravity to their forwardly inclined or normal positions (see Fig. 6).

Having thus described my invention, what I claim as new, and desire to secure by LettersPatent of the United Statesof America, 1s:

1. A current motor comprising a beam pivotally supported intermediate its ends, whereby the end portions of said beam can swing back and forth longitudinally of the current, a plurality of blades rotatably mounted on each end of said beam, the blades at one end of said beam being supported to rotate independently of those at the other end thereof and arranged so that when rotated they will be moved successively into the water, means to hold said blades against rotation on said, beam, means to release said first means during movement of said beam in one direction, and means whereby said blades are, rotated during movement of said beam in the reverse direction to move-a blade into the water.

2. A current motor comprising a beam supported for horizontal swinging, hubs journaled on the end portions of said beam to rotate independently of one another, a pair of blades on each of said hubs, said pairs of blades being arranged to have their blades alternately moved into the water, means for holding said hubs against rotation, means to operate said first means to release said hubs, and means whereby said hubs arerotated to engage their other blades in the water after they have been released by said first means.

3. A current motor comprising a means supported to swing horizontally, pairs of oppositely disposed blades supported for independent rotation on the end portions of said means, means for holding said pairs of blades against rotation, means for releasing said second namedmeans, during swinging of said first means, and means for rotating said pairs of blades after they have been released.

i. A current motor comprising a means supported to swing horizontally, pairs of oppositely disposed blades supported for rotation independent of one another on the end portions of said means, means for holding said pairs of blades against rotation, means for releasing second named means during swinging of said first means, and means for rotating said pairs of blades by and during swinging of said first. means. for the purpose specified.

5. A current motor comprising a beam supported to swing horizontally, blades journaled on the end portions of said beam and arranged in pairs, said pairs of blades being supported for independent rotation, means for holding said pairs of blades vertically against rotation, whereby the current can act on the lower blades to swing said beam, means to release said pairs of blades during movement of said beam, and means to rotate said pairs of blades after they have been released so as to move the upper blade of each pair into the water.

6. A current motor comprising a beam pivotally supported intermediate its ends, whereby the end portions of said beam can swing back and forth longitudinally of the current, hubs rotatably mounted on the end I portions of said beam for rotation independent of one another, blades fixed to said hubs, the blades on each hub being arranged for successive engagement in the water, means to hold said hubs against: rotation, means to operate said first means by and during swinging ,of the end portions of said beam in one direction whereby the active blades will be released, and means whereby the blades on one end of said beam are rotated to engage a blade in the water while the blades on the opposite end of said beam are being released so as to be free to rotate.

7. A current motor comprising a beam pivotally supported intermediate its ends, so that its end portions can swing baclt and forth longitudinally of the current, hubs rotatably mounted on the end portions of said beam, oppositely disposed blades fixed to said hubs, adjustable stops on said beam. pins on said hubs for engagement with said stops for holding said hubs against rotation with one blade engaged in the water, means arranged in the path of said stops for operating the same so as to release said hubs, relatively fixed abutments, and means on said hubs arran 'ed to strike said abutments and thereby effect rotation of said hubs to move the upper blades into the water, as specified.

8. In combination with a current motor including a beam supported for horizontal swinging, a pump apparatus including a piston rod provided with spaced collars, a piston rod when said finger is disengaged finger on said beam arranged to engage befrom between the collars thereof. 10 tween said collars and thereby transmit mo- Signed at Seattle, Washington this 17 day tion from said beam to said piston rod, of June 1908.

5 means to guide said finger from between said ALONZO K. ISHAlM.

collars at spaced apart points, and set de- Witnesses: vices engaged and operated by said beam CHAS. M. BEST,

for preventing backward movement of said FRANK E. ADAMS. 

